Sharpening device for rolling colters.



R. M. SPILLMAN.

SHARPENING DEVICE FOR ROLLING COLTERS.

AUUCAHON HLEDxuNE8.1918.

Lfig. Patented Dec. 12, 1916.

2 SHEETS-SHEET l.

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R. IVI. SPILLMAN.

SHARPENING DEVICE FOR ROLLING COLTERS.

APPLICATION FILED JUNE 8. 1916. v

Patented Dec. 12, 1916.

2 SHEETS-SHEET 2.

W WM W w a, 4 Q/ M Jz/ e f m/z M /Q i f J| w aktem/1 1138 RICHARD M. srILLniAn, or' rosEYvrLLn, INDIANA.

SHARPENING DEVICE FOR ROLLING COLTERS.

specification of Letters Patent.

Patented Dec. 12, 1910.

Application filed June 8, 1916. Serial 1\To. 102,524.

T0 all whom it may camera Be it known that T, RICHARD M. SPILL- MAN, a citizen of the United States, residing at Poseyville, in the county of Posey and State of Indiana, have invented certain new and useful Improvements in Sharpening Devices for Rolling Colters; and T do declare the following` to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in plow colters, and one of the objects is to provide a sharpening device for attachment thereto so that the same may be sharpened while inoperation.

An additional object is to provide a simply constructed sharpening device which may be readily attached to practically any type of rolling colter, or quickly removed therefrom.

Still another object is to provide means for scraping the soil from the colter before it is acted upon by the abrading stones carried by the sharpening device.

VVith these and other objects in view, my invention consists of the novel features of construction, and the combination and arrangement of parts which will be hereinafter more particularly described and claimed.

In the accompanying drawings: Figure l represents a side elevation of a colter showing my invention applied thereto; Fig. 2 is a horizontal section on the plane of the line 2-2 of Fig. 1; Fig. 3 is a Vertical section on the plane of the line 33 of Fig. 1; and Fig. 4 is a detail perspective view of the abrading` block carrying' member.

Referring more particularly to the drawings, C designates broadly a plow colter comprising an upright shank 1 which is attachedv in the usual manner to' the frame of a plow, disk carrying arms 2 which are rotatably mounted on the lower end of the shank 1, and a rolling disk 3 journaled between the free ends of the arms 2. This structure which has been just described is of ordinary construction and similar to that used in all rolling colters for plows.

My improved sharpening device is supported upon the shank 1 and the arms 2, the same consisting of an abrading` block carrying member L and abrading blocks 5 carried thereby, a pair of blocksbeing illustrated, one being disposed on each side` of the disk 3. The member 4: is formed from a single piece of strap metal bent into U- shape to provide arms 6, one of which is disposed on each side of the disk, the base thereof being` in contact with the upper portion of the shank 1. At this point of engagement with the shank the member ll is provided with a semi-circular seat 7 said seat being formed in the base of the member. In order to hold the member upon the shank 1, a U-shaped clip 8 is disposed around the latter and has its arms engaging and connected to the arms 6 by means of a bolt 9. This arrangement permits the member to be slidably and rotatably mounted upon the shank, although it is obvious that by tightening the bolt 9 to a considerable degree the member may be tightly held on said shank.. As is usual in this type of colter, the shank thereof has its lower end ofiset laterally as shown'at 1', thereby providing a shoulder 10 upon which the lower edge of the member l may rest so as to limit its downward movement at this end.

- The opposite end of the member a has its arms 6 supported by legs 11, one of which is disposed on each side of the cutter or disk 3, the upper ends of said legs being riveted or otherwise connected to the outer portions of said arms G. The lower ends of the legs 11 are adapted to engage the disk-carrying arms 2 adjacent their connection with the disk 3. The legs are supported upon these armsv 2 by means of spring` fingers 12, one of which is attached to each leg,` and is adapted to engage the outer surface of each arm 2, while the free ends of the legs engage the inner surface thereof, as clearly shown in Fig. 3.

In order to facilitate the engagement of the spring fingers 12 with the arms 2, ribbed plates 13 are secured to the latter, each of these plates having a substantially horizontal outwardly extending rib with which the Shoulders 14 on. the spring fingers are adapted to engage.

The outer ends of the arms 6 are longitudinally slotted as shown at 15 to receive threaded studs 16 which extend from the backs of abrading block carrying sockets 17, nuts 18 being threaded upon said studs to hold said sockets in adjusted positions on said arms. From Fig. 2 it will be seen that one of .these sockets 17 is provided on each of the arms 1G and is disposed upon the inner surface thereof so that the blocks 5 of abrading material may engage the cutting edge of the disk as it revolves. These blocks of abrading material and their sockets are preferably substantially rectangular and are adapted to be moved on the arms 6 so as to dispose the Cutting faces of the latter in engagement with the edge of the disk.

In order to hold the blocks 5 in contact with the Cutting edge of the disk 3, or to space the 'same therefrom, a bolt 23 connects the arms 6 intermediate their ends. This bolt has a pair of nuts 24- threaded thereon and disposed between the arms 6 so that by rotating the same in the properrdirection the arms may be forced apart, and in order to hold them in adjusted position lock nuts 25 are threaded on the outer ends of the bolt on the vouter faces of the arms. w

Inasmuch as the soil which clings to the disk prevents the sharpening device from Operating to the best advantage, scrapers are provided, one on each side of the disk so as to scrape the dirt therefrom before it clogs the faces of the stones. These scrapers each of which is formed of a pair of L-shaped plates 20, have long arms which are longitndinally slotted at 21 in order that they may be disposed upon the studs 16 and clamped to the arms (3 by means of the nuts 18. The short arms of the plates which compose the scrapers have fiexible contact members 22, preferably strips of leather clamped therebetween, these contact members engaging the opposite sides of the disk adjacent its periphery so as to remove the dirt therefrom. The scrapers, as before mentioned, are held in place by the stnds and bolts 16 and 18 respectively, and they are disposed between the sockets 17 and the arms 6 with the ends which carry the contact members 22 disposed toward the rea-r.

When the disk 3 is rotating as indicated by the arrow in Fig. 1, it will be seen that the dirt which is collected thereon will be scraped off the same by means of the contact members 22 of the scrapers 20 before the part which has recently engaged the ground comes into engagement with the ,faces of the blocks 5V of abrading material.

i From the foregoing description, taken in connection 'with the accompanying Vdrawings, it will be seen that I have invented an extremely simple sharpening device for plow colters whereby the disks thereof may be kept continuously sharp while the implement is in operation.

The sharpening device may be used by itself or in combination with the improved scraping attachment, but it is preferably used and works to better advantage when the said attachment isapplied. The scraper is also capable of use without the abrading device and it may be used on the same support which holds the blocks of abradingl material when the same has been removed.

I claim 1. A sharpening device of the class described comprising a U-shaped supporting member, said member having a semicircular seat in its base adapted to receive a shank of a cofltcr, the arms of said member being adapted to be disposed one on each side of the disk of the colter, a U-shaped clip having its arms engaged with the arms of said member and adapted to be disposed around said shank to hold said sharpening device in operative position, and an abrading block on the free end of each of the arms of said member and adapted to engage and sharpen the disk'of the colter when the same is in operation.

2. In a sharpening` device of the class described, an anxiliary cleaner comln'ising` a supporting member, a scraper comprising a pair of L-shaped plates attached by their long arms to said member, and a fiexible contact member disposed between said plates and projecting beyond the short arms thereof.

3. A sharpening device of the class` (lescribed comprising a U-shaped supporting member, said member having a semieirculal' seat in its base to receive the shank of a colter, the arms of said member beingr adapted to be disposed one on each side of the disk of the colter, a U-shaped clip having its arms engaged with the arms of said member and adapted to be disposed around said shank to hold said sharpening device in operative position, a leg depending from each of said arms adapted to be attached to the disk carrying arms of the colter, and an abrading block on the free end of each of the arms of said member adapted to engage and sharpen the disk of the colter when the same is in operation.

4. In combination with a disk colter, an

abrading block supporting member mounted on the shank thereof, a leg depending from said member for engagement with the diskcarrying arm of the colter, and an abrading block carried by said member and engaging the face of the disk of said colter. i 5. In combination with a disk colter, an abrading block supporting member mounted on the'shank thereof, a leg depending from said member for engagement with the diskcarrying arm of the colter, a spring finger on the end of said leg for coperative engagement with the disk-carrying arm, and an abrading block carried by said member and engaging the disk of said colter.

In combination with a disk colter, a U-shaped supporting member, the arms of said member being disposed one on each side of the disk of said colter, said member having a. semi-circular seat in its base to receive the shank of said colter, a U-shaped clip disposed around said shank and having its ends engaged With the arms of said member, and an abrading block on the free ends of each of the arms of said member and in engagement With said disk.

7. In combination With a disk colter, a U-shaped supporting member, the arms of said member being disposed one on each side of the disk of said colter, said member having a semi-circular seat in its base to receive the shank of said colter, a U-shaped clip disposed around said shank and having its ends engaged With the arms of said member, an abrading block on the free ends of each of the arms of said member and in engagement With said disk, and a leg depending from each arm of said member for engagement With the disk-carrying arms of the colter.

8. In combination With a disk colter, a U-shaped supporting member, the arms of said member being disposed one on each side of the disk of said colter, said member having a semi-circular seat in its base to receive the shank of said colter, a U-shaped clip disposed around said shank and having its ends engaged with the arms of said member, an abrading block on the free ends of each of the arms of said member and in engagement With said disk, a leg depending from each arm of said member, a ribbed plate secnred to each of the disk-carrying arms, and a spring finger carried by each leg and adapted to spring over the ribs on said plates.

9. In combination with a disk colter, a U-shaped supporting member, the arms of said member being disposed one on each side of the disk of said colter, said arms having slots in the free ends thereof, said member having a semi-circular seat in its base to receive the shank of said colter, a U-shaped clip disposed around said shank and having its ends engaged with the arms of said member, an abrading block socket carried by each of the arms of said member, threaded studs extending from said sockets and disposed in said slots, nuts on the threaded studs for holding said sockets in adjusted position on said arms, and blocks of abrading material disposed in said sockets.

10. The combination With a disk colter, a supporting member, a leg depending from said member for engagement With the diskcarrying arm of the colter, and a scraper attached to said member and engaging the disk of said colter, said scraper comprising an L-shaped plate.

11. The combination With a disk colter, a supporting member, a leg depending from said member for engagement With the diskcarrying arm of the colter, a scraper comprising a pair of L-shaped plates attached by their long arms to said member, and a flexible contact member disposecl between said plates and projecting beyond the short arms thereof into engagement With the disk of said eolter.

In testimony Whereof I have hereunto set my hand in the presence of two subscribing ivitnesses.

RICHARD M. SPILLMAN. Witnesses:

TI-ros. D. SHEL'roN, J osEPi-r NAAs.

Gopies of this patent may be obtained for five cents each, by addressng' the Gommissoner of Patenta Washington, D. G." 

